Ore washer and concentrator



(No Model.) 2 Sheets-$heet 1.

A. L. DANA. 'ORE WASHER AND GONGENTRATOR.

No. 540,953. I Patented June 11, 1895.

\u N N 22 yamc%%ydam zo m (No Model.) 2 Sheets-Sheet v A.L.DANA. OREWASHER AND GONGENTRATOR.

No. 540,953. v Patented June 11,1895.

'UNITED STATES PATENT OFFICE.

ARTHUR L. DANA, F

ROSWELL, COLORADO, ASSIGNOR TO-J. C. FREEMAN, OF BOSTON, MASSACHUSETTS.

ORE WASHER AND CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 540,953, dated June 11,1895.

Application filed February 27, 1895. Serial No. 539,638. (No model.)

To all whom, itmoby concern:

Be it known that I, ARTHUR L. DANA, of the city of Roswell, El Pasocounty, State of Colorado, have invented certainnew and usefulImprovements in OreVVashers and Concentrators, of which the following isa" full, clear, and exact description, reference being had to theaccompanying drawings, forming a part hereof. to My invention relates toan improvement on the machine shown and described in myformer UnitedStates Patent, No. 481,550, dated August 30, 1892, and it consists inthe novel construction, combination and arrangement of r 5 parts,hereinafter specified and designated in the claims.

In the drawings, Figure 1 is a view in perspective of my completemachine. Fig. 2 is a longitudinal sectional View taken, approxi- 2omately, on the indicated line 2 2 of Fig. 1 and looking in the directionindicated by the arrow A A, Fig. 1. Fig. 3 is a vertical crosssectionalview taken, approximately, on the indicated line 3 3 of Fig. 2 andlookingin the direction as indicated by the arrow B, Fig. 2. Fig. 4 is aview in perspective of one of the boxes into which the ore is depositedafter the same has passed through the concentrator.

Referring by numerals to the accompany- 0 ing drawings, 1-1 indicatefour upright posts, the same being framed together at their top ends bylongitudinal timbers 2-2 and crosstimbers 3-3.

4-4 indicate parallel side timbers framed 5 into the uprights 1 atpoints below the longitudinal centers of said uprights 1, and framedinto theselongitudinal timbers 4 at their ends arecross-timbers 5-5.

Located approximately half way between '40 and extending parallel withthe top longitudinal timbers 2-2 is a central timber 6, the same beingfixed to and resting directly upon the end cross timbers 3-3. Thiscentral timber 6' together with one of the timbers 2, ex- 5 tends aslight distance beyond the ends of the uprights l at one end oftheframe, for a A purpose which will be presently shown.

Transverse timbers 7-7 are framed into the parallel timbers 2-2 andtimber 6 between the timbers 3-3. These timbers so located and heldtogether by means of suitable braces such as 8, constitute the-framework, whereupon the operative parts of my improved apparatus aresupported and which will now be described.

Hung to swing between the side timber 4-4 of the apparatus by means ofjointed rods 9-9 hooked at their top ends to eyes 10 that are fixed tothe cross-timbers 7, is a-rectangular oscillating frame comprising theside tim- 6o bers 11-11 and end timbers 12-12. Antifriction rollers 13are positioned horizontally in the side timbers 4-1 and are adapted toengage the outer faces of the 'side timbers 11-11 of the oscillatingframe and prevent any rubbing or friction that might otherwise ensue.

Rigidly fixed to the inner faces of the end cross-timbers 5 are leaf orbow springs 14, said springs being for the purpose of receiv- 7o ing theimpact of the oscillating frame as the same reaches its limit oflongitudinal movement. Fixed to one end of the oscillating frame anddepending therefrom are metallic bars 15, the same having rigidly fixednear their lower ends, a transverse bar 16 from the center of whichprotrude ears 17. Between these ears 17 is pivoted the rear end of alink18, the forward end of which is bifurcated and pivoted to the long armof a bell-crank 8o 19, the same being fulcrumed at the juncture of thelong and short arm between a pair of cars 20 that are bolted rigidly toand extend laterally from across-timber 21 that is located upon theparallel side timbers 4 andadja- 8'; cent two of the upright timbers 1The upper end of the shorter arm of the bell-crank'19 is pivoted in thebifurcated lower end of an arm 22, the upper end of which is journaledupon the end of a crank 23 that is keyed upon one o end of a transverseshaft 21, said shaft being journaled in bearings 25 that are bolted tothe under sides of the timber 6 and side timbers 2-2 that extend beyondthe end of the machine. Located upon this shaft 2i and between thebearings 25 are tight and loose pulleys, indicated by the numerals 26and 27 respectively. Upon the outer end of the shaft 24 is fixed abalance-wheel 28, of any suitable form and size. g [CO A framecomprising side timbers 29-29 and end timber 30 islocated in theoscillating frame previously described and is pivoted approximately atits longitudinal center by means of a transverse rod 31, that passesthrough the side timbers 29 and having its ends bearing in the sidetimber 11. A suitable receptacle depends from these side and endtimbers, and is formed of sheet metal sides 32 and ends 33. The bottom34 of this receptacle so formed is constructed of sheet metal andinclines from one side to the other. False bottoms 35 and 36 areconstructed in this receptacle and incline from the center thereof tothe ends 33, the inclined false bottom 36 extending to a point beyondthe inner end of the false bottom 35, thereby forminga trap or passage37 between the ends of said inclined false bottoms. Extending from theinclined false bottom 35 to the inclined false bottom 36 and lying in ahorizontal plane, is a grating or screen 33, the same removably held inproper position by ears 39 fixed to the inclined false bottoms. By thusconstructing the inclined false bottoms, a chamber 40 is formed betweensaid bottoms and the true bottom 34 of the receptacle, said true bottom34 as previously mentioned, inclining from one side to the other.

A transversely positioned plate 41 is hinged to the under side of thefalse bottom 35 adjacent the end thereof, and is adapted to close thepassage 37 between the ends of the false bottoms 35 and 36. To the lowerend of said plate 41 which performs the function of a valve, is pivoteda longitudinally extending rod 42 that passes through one of the endwalls 33 of the receptacle, and is connectedby means of a link 44 to thedownwardly pending arm 45 of a crank 46, the same journaled in bearingsfixed to the under side of the end timber 30 and extending to one sidethereof. On theend of said crank 46 is rigidly fixed a hand lever 47that operates in and is adapted to be engaged by the teeth ofa segmentalrack 48, the same being fixed to one of the side timbers 29 ot' thereceptacle frame.

To the inner face of one of the end timbers 12 of the oscillating frameis fixed an auxiliary timber 49, that is sheathed with suitable packing50 and is adapted to close the end of the receptacle opposite from theend-timber 30. A plate or tie-rod 51 connects the ends of the sidetimbers 29 and serves to retain the same in their proper positions.

Located in one of the side walls 32 just above the screen 33 is a seriesof apertures 52 that communicate from the interior of the receptaclewith the interior of a rectangular tube 53 that is formed integral withand extends to one end of the receptacle.

A cut'oif plate 54 is constructed with a series of apertures 55 of thesame size as is the apertures 52, and said plate lies directly over theseries of apertures 52 and moves longitudinally in suitable bearings 56fixed to the inside of the wall32. To one end of this cutoff plate 54 ispivoted one end of a link 57, the other end of which is pivoted to thelower end of a hand lever 58, the same being fulcrumed to the side wall32, and the handle of which extends outside the receptacle and whereitmay be conveniently reached.

Formed in the side wall 32 at the longitudinal center of the receptacleand adjacent the highest side of the inclined bottom 34 is a rectangularaperture 59 that is constructed with a suitable cover 60 on the outsideof said wall 32.

Removably held in bearings 6L iixed to the under side of the inclinedbottom 34 is asuitable receptacle 62, the same being preferablyconstructed of sheet metal, with the inclined bottom 63 and apertures 64and 65 in its top. The aperture 64 is located directly beneath theaperture 59 in the lower end of therecep' tacle, and the aperture 65 isadapted to be closed by a sliding cover 66. In the side wall 32 directlyopposite this rectangularopening 52 is a rectangular opening 67 that isconstructed with a suitable cover 68, the same forming a guide for thevertically moving out- 01f plate 69, that is adapted to normally closesaid opening or aperture 67. Directly beneath this opening 67 andlocated in bearings 70 in every way similar to the bearings 61, is areceptacle identical in form and size with the previously describedreceptacle 62. Pivoted to the upper end of the vertically moving plate69 is a link 71, to the upperend of which is pivoted, the forward end ofa hand lever 72, the same extending longitudinally along the side of thereceptacle, and the bandle of which is bent upwardly into a planeapproximating that occupied by the handle of the fulcrumed hand-lever58. A slight depression orgroove 73 is formed transversely in the bottom34 of the receptacle and extends from the opening 59 to the opening 67.

Pivoted to the top or in the longitudinal center of the end timber 30 isa horizontally moving hand-lever 74, that normally engages beneath acatch 75 that is rigidly fixed to the top side of the end timber 12 ofthe oscillating frame that is adjacent said end timber 30 of thereceptacle frame. By means of this hand-lever which may be properlytermed a lock lever, the receptacle frame and oscillating frame arerigidly held against vertical movement relative to one another.

If desired,a glazed opening such as 76 may be located in one side wallof the receptacle, in order that the working and correct positioning ofthe valve or plate 41 may be at all times visible.

Secured to the under side and at one end of the receptacle is a hook 77to which is attached one end of a rope or cable 78, the same passingupwardover a pulley 79 swung from the under side of one of thecross-timbers 7, and extends from thence downwardly, and is attached toa book 80 fixed in one of the upright posts 1. By means of this rope,the receptacle is tilted or swung to the position as shown by dottedlines in Fig. 2.

The operation of my improved ore washer ICC and concentrator is asfollows: A driven belt passing over the tight pulley 27 imparts arotarymotion to the shaft 24, balance-wheel 28 and crank 23. The arm 22 beingconnected to the crank 23 at one end and to the bellcrank 19 at theother end, necessarily imparts movement to said bell-crank, and as thearm 18 is connected at one end to the bell-crank 19 ing out orconcentrating of mineral with my and to the metallic bars 15 that dependfrom the oscillating frame, said frame will be moved backward andforward in a horizontal plane and between the end cross-timbers 5 5. Atthe end of each horizontal throw or movement of said oscillating frame,the end timbers 12 of said frame will impinge against the leaf or bowsprings 14, and the resiliency of said springs will tend to throw theoscillating frame in a reverse direction from that in which it wasmoving when it engaged said springs. Any suitable means may beemployed,whereby water is discharged into the receptacle. The ore ordirt is placed directly within the receptacle upon the inclined falsebottoms 35 and 36 and the screen 38. After the receptacle and contentsthereof have been oscillated orrshaken for a stated length of time, theoperator by means-of the hand-lever 58 opens the side cut-off plate 54:,which allows the lighter dirt, sand, &c., to pass through the coincidingapertures 55 and 52 and be discharged through the rectangular tube 53 atone endoftheoscillatingframe. Theheavier particles of dirt, sand andmineral will pass through thegrate 38 and will locate beneath said grateupon the, inclined false bottom 36 and against the valve 41. Said valve41 is now opened by manipulating the hand lever 47 in the ratchet-rack4:8, and said mineral and heavier particles of dirt are allowed to passinto the chamber 40 and upon the. bottom 34 of the receptacle. Thecontinued os cillation or shaking, together with the action of the watercauses the dirt,sand, &c., to pass offthrough the aperture59. Acertainamount of the lighter mineral will also pass through this opening andthe same willby reason of its weight, gravitate downwardly and passthrough the opening 64 of the receptacle 62 that is located immediatelybeneath said opening 59. The heavier mineral will by reason of itsspecific gravity, pass into-the groove or channel 73 and gravitatetoward the aperture 67 that is normally closed by the verticallyarranged. slide 69. When said slide 69 is raised by the action of thehand lever 72,'said heavier mineral will pass immediately into thereceptacle 62 that is located beneath said aperture 67. The mineralafter passinginto the receptacle 62, will by reason of its own weight,pass to the lowermost points or corners thereof, and at certain timesduring the washimproved means, said receptacles 62 are to be removed,the surplus dirt on the tops thereof washed out, leaving the freemineral in said receptacle. When it is desired to dump the matter fromthe receptacle, that does not pass the receptacles 62 to collect themineral falling therein, though this is not essential to the completeWorking of my device.

Slight changes in my apparatus may be resorted to, by any skilledmechanic, without departing from the spirit and scope of my invention.

Thus it will be seen how I have constructed an ore washer andconcentrator, that possesses superior advantages in point of simplicity,durability and general efficiency.

V-Vhat I claim is 1. An ore washer and concentrator, comprising arectangular frame, an oscillating frame mounted to swing in saidframe,'leaf or how springs located at the ends of the frame and adaptedto receive the impact of the swinging or oscillating frame, a receptaclepivoted within said oscillating frame, false bottoms for saidreceptacle, inclining in opposite directions toward the ends thereof,and

2. In an. apparatus of the class described, a suitable frame work, aframe mounted for a valve adapted to close the trap between the 'T endsof said inclined false bottoms.

IOO

oscillation Within said frame work, leaf or bow springs adapted toreceive theimpact of said oscillating frame, means for oscillating saidframe, a receptacle pivoted within said oscillating frame, false bottomsfor said receptacle inclining in opposite directions toward the endsthereof, a valve adapted to close the trap or passage between saidinclined false .bottoms, a hand-lever and connecting rods for operatingsaid valve, and auxiliary receptacle, said auxiliary receptacles beingconstructed withincliued bottoms.

3. In an apparatus of the class described, the combination of a suitablereceptacle, false bottoms for said receptacle inclining in differentdirections and toward the ends thereof, a valve closing the passagebetween said inclined false bottoms, a screen held upon said inclinedfalse bottoms, a V-shaped groove or IIO -tacles held beneath the firstmentioned recep- IO apertures or openings in the side walls thereof, andauxiliary receptacles constructed with inclined bottoms, removably heldbeneath the apertures in the side walls of the first mentionedreceptacle.

In testimony whereof I alfix my signature (5 in presence of twowitnesses.

ARTHUR L. DANA.

Witnesses:

FRED L. CRISSEY, THOMAS 0RD.

